Samsung GT-I9515 Running Android 4.4 Kitkat
Samsung GT-I9515 is assumed to be the Samsung Galaxy S4 Neo as Samsung these days is busy bringing up Neo Devices of their Premium segment Smartphones Like Samsung Galaxy Note 3 Neo. If the News is correct we might see Samsung Galaxy S4 Neo at MWC 2014. Samsung GT-I9515 was leaked in the benchmarks running Android 4.4 Kitkat, 5-inch display with (1080 x 1920 pixels), and a 1.9GHz Qualcomm Snapdragon 600 processor, Adreno 320 GPU. See it Below.
Also the Import Data from Zuba is a supporting proof that we might see a new device from Samsung soon. See it below.
So if both the sources are correct we are soon going to see Samsung Galaxy S4 Neo or might be another Premium Device. so stay Tuned for More Details.